History  车辆空调専用卧式涡旋压缩机历史

1966  年开始提供列车空调用往复式压缩机。
          Started supply of reciprocating compressor for railway air conditioners.

1983  年开始批量生产“世界首创”的空调用涡旋压缩机。
            Started production of the world’s first scroll compressor for air conditioners.　　　　

1987  年开始批量生产“世界首创”的列车用涡旋压缩机。
           Started production of the world’s first scroll compressor for railway air conditioners.　　
　　
2008  年开始提供纯电动巴土空调用涡旋压缩机。
            Started supply of scroll compressor for all-electric bus air conditioners.　　　　


凭借自1966年以来积累的丰富经验，日立开发了专用于车载空调的设计。

其体积较小、重量轻、日立卧式涡旋压缩机适合用于安装空间与空调重受限制的地铁和轻轨项目等。


日立车辆空调専用卧式涡旋压缩机优点

高效率
通过最大限度地抑制压缩时的漏气，提高了效率。两个邻接的压缩室的差压比排出压力减去吸入压力后的合计差压还要小，因此能最大限度地抑制漏气。另外由于排出口不与低压侧相连，因此压缩空气不膨胀。

High Efficiency
Efficiency has been improved by minimizing gas leaks during compression.The gas leakage can be minimized because the pressure difference between the 2 compression pockets next to each other is less than the total pressure difference, which takes intake pressure from the outlet pressure.Also, the compressed gas does not expand, as the outlet opening is not connected to the low-pressure side.

低噪声、低振动
由于在一连串的运动中连续进行吸入、压缩和排出，因此振动和噪音较小，而且与其它类型的压缩机相比涡旋压缩后的转矩几乎无变化。

Low noise and Low Vibration
As intake, compression and emission are continuously carried out as a series of movements, the scroll compres-sor has low noise and low vibration, plus the torque after compression is nearly the same as other compressors.


高可靠性
动涡盘由高压室内的中间压力支承，可减少滑动部件， 提高可靠性。
由于油层少，耐频繁开/关操作。
排出气体温度和压力波动小。
由于油通过压差供给到压缩室中，适于变速控制。

High Reliability
Orbiting scroll is supported by intermediate pressure in high pressure chamber, which can reduce sliding parts and realize higher reliability.
Higher resistance to ON/OFF operation thanks to less oil foaming.
Less fluctuation of temperature and pressure for discharge gas.
Suitable for variable speed control, since oil is supplied to compression room by pressure difference.

大小和重量
由于其体积较小，采用日立卧式涡旋压缩机可节省空间。 特别是HVAC的已变得更薄。它们主要用于安装空间有限 的地铁和轻轨项目。
采用日立卧式涡旋压缩机可减小空调重量，实现节能。

EfficiencySize & Weight
Thanks to compact design, adoption of Hitachi horizontal scroll compressors realizes space-saving. Especially, the HVAC has become thinner. They are mainly used in Metro and LRT projects,where installation space is limited.Reducing the weight of the air conditioner by adopting HITACHI horizontal scroll compressors can realize power-saving.

车辆空调専用卧式涡旋压缩机采用例

新干线、高速列车、城市交通电车、地铁、路面电车、单轨铁路、纯电动巴士、普通旅客列车

Shinkansen (Bullet train)、High-speed train、Commuter、Metro、Tram、Mono-rail、All-electric bus、Local train


车辆空调压缩机型号

trainConstantSpeed   恒速
G300DL、G350DL、G400DL、G450DL、G500DL、G600DL、G700GL、G900GL、G750EL、G1000EL

Inverter 变频
G501DLV、G700DLV